switching to nasm, yasm is dead from what I can tell, not caring about perf diff anymore.

scripts/build_duff.ps1

@@ -0,0 +1,41 @@
+$path_root  = split-path -Path $PSScriptRoot -Parent
+$path_build = join-path $path_root 'build'
+$path_code  = join-path $path_root 'code'
+
+$path_source = join-path $PSScriptRoot 'build.odin'
+$exe         = join-path $path_build   'build_win32.exe'
+
+if ((test-path $path_build) -eq $false) {
+	new-item -itemtype directory -path $path_build
+}
+
+$odin = 'odin.exe'
+
+$command_build = 'build'
+
+$flag_debug                 = '-debug'
+$flag_file                  = '-file'
+$flag_dyn_map_calls         = '-dynamic-map-calls'
+$flag_no_bounds_check       = '-no-bounds-check'
+$flag_no_threaded_checker   = '-no-threaded-checker'
+$flag_no_type_assert        = '-no-type-assert'
+$flag_optimize_none         = '-o:none'
+$flag_output_path           = '-out='
+$flag_default_allocator_nil = '-default-to-nil-allocator'
+
+push-location $path_root
+$build_args = @()
+$build_args += $command_build
+$build_args += $path_source
+$build_args += $flag_file
+# $build_args += $flag_debug
+$build_args += $flag_optimize_none
+$build_args += $flag_no_bounds_check
+$build_args += $flag_no_threaded_checker
+$build_args += $flag_no_type_assert
+$build_args += $flag_dyn_map_calls
+$build_args += $flag_default_allocator_nil
+$build_args += $flag_output_path + $exe
+# & $odin $build_args
+& $exe
+pop-location